Ξ Notes

Recent Notes

Created byjinxon May 03, 2011 12:11:35
Last update: May 03, 2011 12:12:27

The PHP function is_resource returns TRUE if a variable is a resource.
This may come in handy when a function you are calling returns mixed type. For example mysql_query returns TRUE or FALSE for INSERT , UPDATE , DELETE etc., but returns resource or FALSE for SELECT , SHOW , or DESCRIBE .
<?php
$rows = array();
if ($res = mysql_quer...

Created byDr. Xion September 29, 2008 23:05:12
Last update: September 29, 2008 23:06:16

These variables are set or used by the Unix shell to modify its behavior. Variable Description ENV=file Name of script that gets executed at startup; Usually, ENV=$HOME/.kshrc FCEDIT=file Editor used by fc (fix command) command. If $FCEDIT is not defined, use $EDITOR, otherwise use the default (vi or ed). FPATH=dirs Directories to search for function definitions; undefined functions are set via typeset -fu . FPATH is searched when these functions are first referenced. HISTFILE=file File in which to store command history. Default is $HOME/.sh_history for Korn shell, $HOME/.bash_history for Bash. If not set, history is lost after logout. HISTSIZE=n Max number of commands to keep in history. HOME=dir Home directory; set by login from passwd file. IFS='chars' Internal field separators. Default is space, tab, and...

Created byDr. Xion September 29, 2008 23:03:40
Last update: September 29, 2008 23:04:08

Variables set automatically by shell: Variable Description $# Number of command-line arguments. $- Options currently in effect (arguments supplied to sh or to set). $? Exit value of last executed command. $$ Process number of current process. $! Process number of last background command. $0 First word; that is, command name. $n Individual arguments on command line (positional parameters). The Bourne shell allows only nine parameters to be referenced directly (n = 1-9); the Korn shell allows n to be greater than 9 if specified as ${n}. $* All arguments on command line ("$1 $2..."). $@ All arguments on command line, individually quoted ("$1" "$2" ...). Variables set automatically by Korn shell: Variable Description ERRNO Error number of last system call that failed. LINENO Current...

Created byDr. Xion September 21, 2008 21:04:24
Last update: September 21, 2008 22:27:36

IE uses Notepad as the default editor when you select "View Source" from a web page. You can change it to your favorite editor by adding a couple of keys to the registry: Start regedit Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ Add key View Source Editor Under View Source Editor , add key Editor Name Change the default string value to the full path of your favorite editor. The following is the registry entry for vim (full tip for vim is available from the vim wiki ): Windows Registry Editor Version 5.00 [HKEY_... It is probably easier (less error prone) to edit this in a file and import it back into the registry. The contents of gvim.vbs are: '--- gVim.vbs ------------------------------------... It is OK to use gvim.exe...

Created byDr. Xion August 10, 2007 21:05:26
Last update: August 10, 2007 21:05:26

This style sheet transforms the struts-config.xml into HTML for easy viewing in a browser. It uses the DHTML JavaScript tooltip from http://www.walterzorn.com/tooltip/tooltip_e.htm .
<?xml version="1.0" encoding="UTF-8"?>
<xsl...